Cellular and molecular mechanisms of IFN‐γ production induced by IL‐2 and IL‐12 in a human NK cell line
Cellular and molecular mechanisms of IFN‐γ production induced by IL‐2 and IL‐12 in a human NK cell line
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人 NK 细胞系中 IL-2 和 IL-12 诱导产生 IFN-γ 的细胞和分子机制
DOI:
10.1002/jlb.58.2.225
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发表时间:
1995
影响因子:
5.5
通讯作者:
H. Young
中科院分区:
文献类型:
--
作者:
Jianping Ye;John R. Ortaido;K. Conlon;R. Winkler;H. Young
Interferon‐γ (IFN‐γ) is an important immunoregulatory protein produced predominantly by T cells and large granular lymphocytes (LGL) in response to different extracellular signals. In particular, two interleukins (ELs), IL‐2 and IL‐12, have been shown to be potent inducers of IFN‐γ gene expression in both T cells and LGL. Although it has been reported that there are some T cell lines that produce IFN‐γ in response to IL‐2 and IL‐12 stimulation, there has as yet been no report of a natural killer (NK) cell line that responds in a similar manner. In this report we present evidence that the cell line NK3.3 derived from human NK cells, responds to both IL‐2 and IL‐12, as measured by increases in IFN‐γ and granulocyte‐macrophage colony‐stimulating factor (GM‐CSF) cytoplasmic mRNA and protein expression. In addition, when used together EL‐2 and IL‐12 synergized in the induction of IFN‐γ and GM‐CSF and this synergy was attributed to an increased accumulation and stability of the IFN‐γ and GM‐CSF mRNAs. To investigate the signaling pathways involved in the gene induction, five inhibitors, cyclosporin A (CsA), transforming growth factor‐β, cydoheximide, genistein, and staurosporine A, were used in analyzing the effects of IL‐2 and IL‐12 on NK3.3 cells. The results suggest that activation of protein kinase C, but not new protein synthesis, is required for IL‐2 induction of IFN‐γ and GM‐CSF cytoplasmic mRNA. In contrast, IL‐12 induction of IFN‐γ cytoplasmic mRNA appears to only partially depend on activation of protein kinase C. Furthermore, both transforming growth factor‐β and genistein, a tyrosine kinase inhibitor, could suppress IL‐2 and IL‐12 signaling but CsA was generally inactive. It also was observed that suppression of cytokine gene expression by these agents was independent of the inhibition of proliferation. In addition, IL‐2 but not IL‐12 induced nudear factors NF‐κB and API, and regulation of the nudear levels of these two DNA binding protein complexes is correlated with IFN‐γ and GM‐CSF gene expression. These data indicate that IL‐2 and IL‐12 may have distinct signaling pathways leading to the induction of IFN‐γ and GM‐CSF gene expression, and that the NK3.3 cell line may serve as a novel model for dissecting the biochemical and molecular events involved in these pathways. J. Leukoc. Biol. 58: 225–233; 1995.
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DOI:
--
发表时间:
1991
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Hayakawa,K;Salmeron,MA;Kornbluth,J;Bucana,C;Itoh,K
通讯作者:
Itoh,K
影响因子:
4.4
作者:
S. Chan;Michiko Kobayashi;D. Santoli;B. Perussia;G. Trinchieri
通讯作者:
S. Chan;Michiko Kobayashi;D. Santoli;B. Perussia;G. Trinchieri
DOI:
--
发表时间:
1988
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Kornbluth,J;Hoover,RG
通讯作者:
Hoover,RG
DOI:
10.1073/pnas.89.5.1740
发表时间:
1992-03-01
影响因子:
11.1
作者:
SICA, A;TAN, TH;YOUNG, HA
通讯作者:
YOUNG, HA
DOI:
--
发表时间:
1982
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Kornbluth,J;Flomenberg,N;Dupont,B
通讯作者:
Dupont,B